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@arijs/stream-xml-parser
Advanced tools
$ npm run test -- notPrettyXmlStream
$ npm run test -- notPrettyXml
$ npm run test -- testHtml
$ npm run test -- selfClose
$ npm run test -- treeBuilder
Parse a HTML string to a tree of VNodes and use Snabbdom to patch a DOM element
// Note below that you need to provide functions
// to decode and encode html entities
// (ex: < to <, " to ", etc)
function elGetHtml (el) {
var t = String(el.tagName).toLowerCase();
var a = '';
var ea = el.attributes;
var eac = ea.length;
for (var i = 0; i < eac; i++) {
var eai = ea[i];
// ↓ provide your encode function ↓
var ean = htmlEntitiesEncode(eai.name);
var eav = htmlEntitiesEncode(eai.value);
a += ' '+ean+'='+JSON.stringify(eav);
}
var sc = StreamXMLParser.htmlVoidTagMap[t];
return {
open: '<'+t+a+(sc?'/':'')+'>',
close: sc ? '' : '</'+t+'>'
};
}
function htmlToVnodes (html) {
var tb = new StreamXMLParser.TreeBuilder({
element: StreamXMLParser.elementSnabbdom()
});
var xp = new StreamXMLParser.XMLParser({
event: tb.parserEvent.bind(tb),
// ↓ provide your decode function ↓
decodeString: htmlEntitiesDecode
});
xp.end(html);
return tb.root.tag.children;
}
function patchElHtml (el, html) {
var patch = snabbdom.init([
require('snabbdom/modules/attrs').default
]);
var outer = elGetHtml(el);
html = outer.open+html+outer.close;
html = htmlToVnodes(html);
el = snabbdom.toVNode(el);
patch(el, html[0]);
}
// How to use:
patchElHtml(your_element, your_html_string);
var mmPerInch = 25.4;
var pointsPerInch = 72;
var pointsPerMm = pointsPerInch / mmPerInch;
var mmPerPoints = mmPerInch / pointsPerInch;
var pageWidth = 210; // A4 paper
var pageHeight = 297;
function renderNode(doc, node, lineX, lineY) {
var span = node.span;
var font = span.fontFamily.split('\t');
doc.setFont(font[0]);
doc.setFontStyle(font[1] || "normal");
doc.setFontSize(span.fontSize);
doc.text(node.text, node.x * mmPerPoints + lineX, lineY);
}
function htmlToParagraphs(html, rootStyle) {
var ht = new StreamXMLParser.HTMLTypeset();
var tb = new StreamXMLParser.TreeBuilder(ht.treeEvent);
var xp = new StreamXMLParser.XMLParser({
event: tb.parserEvent
// ↓ provide your decode function ↓
decodeString: htmlEntitiesDecode
});
Object.assign(ht.rootStyle, rootStyle);
xp.end(html);
return ht;
}
function renderHtmlColumnsToPdf(html, rootStyle)
var ht = new StreamXMLParser.HTMLTypeset();
var rootStyle = ht.rootStyle;
rootStyle.fontSize = 8;
rootStyle.lineLeading = 10;
rootStyle.paragraphLeading = 6;
var tb = new StreamXMLParser.TreeBuilder(ht.treeEvent);
var xp = new StreamXMLParser.XMLParser({
event: tb.parserEvent
// ↓ provide your decode function ↓
decodeString: htmlEntitiesDecode
});
xp.end(this.sumarioExecutivo);
ht = ht.getResult();
var measures = Leerraum.jsPdfDocMeasures(doc);
var colNum = 3;
var colGap = 2;
var colTop = 10;
var colLeft = 10;
var colWidth = 62;
var colHeight = pageHeight - (colTop * 2);
var firstPageOffset = 12;
var lineHeight = rootStyle.lineLeading * mmPerPoints;
var parMargin = rootStyle.paragraphLeading * mmPerPoints;
var parsLines = Leerraum.paragraphsToTextNodes(measures, ht.result, function() {
return colWidth * pointsPerMm;
});
var getPageHeight = function (page) {
// page number starting from zero on the first page,
// content has less space because of space reserved
// for a title on the page.
// This function can return a custom height for each page.
return page ? colHeight : colHeight - firstPageOffset;
};
var getPageTop = function (page) {
return colTop + (page ? 0 : firstPageOffset);
};
var pagesCols = Leerraum.columns.paragraphsToPageColumns(parsLines, getPageHeight, colNum, lineHeight, parMargin);
var pageCols;
var pageIndex = 0;
while (pageCols = pagesCols.shift()) {
var colPars = null;
var x = colLeft;
var y = getPageTop(pageIndex);
while (colPars = pageCols.shift()) {
var parLines;
while (parLines = colPars.shift()) {
var lineWords;
while (lineWords = parLines.shift()) {
var word;
while (word = lineWords.shift()) {
renderNode(doc, word, x, y + 1);
}
y += lineHeight;
}
y += parMargin;
}
x += colWidth + colGap;
y = getPageTop(pageIndex);
}
if (pagesCols.length) {
doc.addPage('a4', 'p');
this.createPDFBackground(doc, cs);
pageIndex++;
}
}
}
MIT.
FAQs
## Testing
The npm package @arijs/stream-xml-parser receives a total of 22 weekly downloads. As such, @arijs/stream-xml-parser popularity was classified as not popular.
We found that @arijs/stream-xml-parser demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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